Tubing drainer



May 7, 1929.

Filed Sept. 14, 1928 WITNESS:

M.' O. RIFE ET AL TUBING DRAINER 2 Sheets-Sheet 1 INVENTORS ATTORNEY May 7, 1929, M. o. RIFE ET AL TUBING DRAINER Filed Sept. 14, 1928 2 Sheets-Sheet 2 Merz/1' Ill ATTOINIY Patented May 7, 1929.

UNITEDN STATES PATENT oFEicE.

MERVIN o. :a1-rn Ann WILLIAM r. carre, or snnnvnronr, Lourmarin.

TUBING Denman.

Application filed. September The present invention has reference to oil pumps and has for its primary object the provision of means for attaching the plunger to the sucker rod7 should the saine be disconnected, which is frequent inthe opera tion of this type of pumps and also to pro-` ride `means whereby the standing valve may `be unseated by the simple turning of the sucker rod when it is desired to drain the tubing while changing' the working' barrel, tubing or standingvalve. i

rin important object of the inventionV is the provision of a strong and etiicient tub-ing thfainer which shall besiniple in construction and manufactured at a low cost.

. Another object is the provision of a device for this `purpose which sha-il be an improvenient upon U. S. Patent No. 1,613,559, granted Jan. V4.-, 1927.

'lo theattainment of the foregoing the invention consists in the improvement hereinafter described and definitely claimed.

In thedrawings:

Figure 1` is a side elevation, with parts in section of the upper portion of the iniprovenient,

Figure 2 is a central longitudinal sectional view of the lower portion of the improvenient.

Figure 3 is a sectional View approximately on the line 3 3 of Figure 2.

Figure 4t is a transverse sectional view ap proximately on the line 4 4 of Figure 2.

Figure 5 is a top plan view of thestanding valve cage. i

Figure 6 is a top plan view of the yoke.

Figure 7 is a side elevation of the yoke.

rlhe cage 1 of the standing valve, except for details which will be referred to, is of the ordinary construction. The cage has arranged therein a ball valve 2 that occupies a seat 3 and there is screwed in the lower end of the cage a tubular extension t which holds the seat in place.

rFhe cage 1 preferably has two -of its opposite or ribbed sides formed with longitudinally extending grooves 5 whose walls are rounded and which serve as guide grooves for the rounded arms of the yoke G. The lower ends of the arms of the yoke are formed with. angularly disposed inwardly directed fingers 7 that underlie the ball valve 2. The connecting clement for the arms of the yolre, is for distinction indicated by the numeral 8, and hasa central threaded opening 9 therethrough.

1i, ieee@` sei-m1 No. 306,091.

The top 10 ofthe cage square in plan and is provided with a central` round and non-threaded opening 12. rihe top l() on the (interface thereof has rightangularly arranged depressions 13, the purpose of which will presently be apparent.

Resting on the squared top 10 of the cage 1. there is the headed and squared ond lll of a plug 15. The lower and reduced end of the plug is threaded, at 16, and these threads are screwed through the threaded opening 9 of the yolre (3. The shanlr is, of course, round in crosssection and has its non-threaded portion passing throughthe ,opening 12 inthe head 10. The shank is formed with an annular groove 17 and passin through the sides of the head. 1() and the cage 1 there are pins 18 that arereceived in `the said grooves. In this manner it will be noted that the plug is revolubly associated with the cage and likewise in this manner it will beA noted that the turning of the plug will impart a longitudinal movement Ato the yolre 6 to `cause the fingers thereof which engage with the ball valve to move the saine away from its seat 3, so that the upper portion of the pump `may be drained when desired.

The head 1li is provided with a longitudi nally extending normally plugged passage for the reception of a pin or detent 19 that is iruluenced by a spring 2O7 the said pin having an outer rounded end adapted to be received in any of the notches 13 in the headed end 1() of the cage 1. By this arrangement it will be seen that the plug is prevented from accidental turning on the cage.

Above and, of course, normally out of contact with the standing valve and the cage therefor, there is the cage 21 for the working barrel 22 of the pump. There is screwed o n the upper end of the cage 21 the socket end of the sucker rod 23 and depending from the cage there is the usual tubular extension 2d that carries the sucker cupe The lower end oi the plunger barrel has a reduced end and an annular shoulder 2G at the juncture of said end. The reduced end is indicated by the numeral 27 and is exteriorly threaded. Screwed on the threaded end 27 and contacting` with the shoulder 26 there is a socket member 28. The socket 29 in the member 2S is of a length approximately equaling that of the head 1li of the plug associated with the standing valve.

' `.plug only, and not enough to engage square 1() on cage. A wrench or similar element 1s employed for turning the ysucker rod, which7 of course, will impart a like turning Ato the socket and the plug and by virtue of theturning of thep'lug an upward longitudinal movement will beimparted to the yoke 26 and to the ball valve of the standing cage so that all oil in the tubing will drain back into the well. In this manner it will be noted that the usual waste incident -tothe changing of the working barrel, the tubing andV standing valve, etc., will be entirely saved.Y It' is further to be noted that the spring influenced pin engaging the Y notches 13 serve to hold the ball valve in the lower or standingcage securely closed when the pump 1s 1n operation.

' It lis thought that the foregoing description when read in connection with the 'aecompanying drawings will fully set forth y 2 l y 1,712,400

the simplicity and advantages of our im proveinent but necessarily the same 1s not to be restricted to the precise details herein set forth as such changes may be made therevmounted on the top of said cage, spring xn- 'luenced means between the plug and cage for holding the plug from free turning on the cage, means for preventing the longitudinal movement of the plug through the cage, said plug having a. threaded engagement with the top of the yoke, a sucker rod screwed on the top of the working valve, a plunger on the bottom of the working valve and a socket member removably secured to the lower end of the sucker rod and engageable with the head of the plug and the squared portion of the standing valve when the working valve is lowered.

In testimony whereof we ax our signatures.

MERVIN O. RIFE. WILLIAM P. CAPPS. 

